Module: Ovpnmcgen

Defined in:
lib/ovpnmcgen.rb,
lib/ovpnmcgen/config.rb,
lib/ovpnmcgen/version.rb,
lib/ovpnmcgen/ovpnconfig.rb,
lib/ovpnmcgen/stringdata.rb

Defined Under Namespace

Classes: StringData

Constant Summary collapse

VERSION = 
"0.6.0"
SUMMARY = 
"An OpenVPN iOS Configuration Profile (.mobileconfig) Utility"
@@config_file_name = 
'.ovpnmcgen.rb.yml'

Class Method Summary collapse

Class Method Details

.config ⇒ Object 



15
16
17
 
# File 'lib/ovpnmcgen/config.rb', line 15

def config
  @@config
end

.configure(filename = @@config_file_name) ⇒ Object

attr_accessor :config, :config_file_name



8
9
10
11
12
13
 
# File 'lib/ovpnmcgen/config.rb', line 8

def configure(filename = @@config_file_name)

  @@config = AppConfiguration.new filename do
    prefix 'og'
  end
end

.generate(inputs = {}) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
 
# File 'lib/ovpnmcgen.rb', line 10

def generate(inputs = {})
  identifier = inputs[:identifier] || inputs[:host].split('.').reverse!.join('.')
  port = inputs[:port] || 1194
  certUUID = inputs[:cert_uuid] || SecureRandom.uuid.chomp.upcase
  vpnUUID = inputs[:vpn_uuid] || SecureRandom.uuid.chomp.upcase
  plistUUID = inputs[:profile_uuid] || SecureRandom.uuid.chomp.upcase
  user, device, domain, host, proto, enableVOD = inputs[:user], inputs[:device], inputs[:host], inputs[:host], inputs[:proto], inputs[:enableVOD]
  p12pass = inputs[:p12pass] || ''
  trusted_ssids = inputs[:trusted_ssids] || false
  untrusted_ssids = inputs[:untrusted_ssids] || false
  remotes = inputs[:remotes] || false
  vodDomains = inputs[:domains] || false

  # Ensure [un]trusted_ssids are Arrays.
  trusted_ssids = Array(trusted_ssids) if trusted_ssids
  untrusted_ssids = Array(untrusted_ssids) if untrusted_ssids
  remotes = Array(remotes) if remotes
  vodDomains = Array(vodDomains) if vodDomains

  begin
    ca_cert = File.readlines(inputs[:cafile]).map { |x| x.chomp }.join('\n')
  rescue Errno::ENOENT
    puts "CA file not found: #{inputs[:cafile]}!"
    exit
  end

  begin
    tls_auth = File.readlines(inputs[:tafile]).map { |x| x.chomp }.join('\n')
  rescue Errno::ENOENT
    puts "TLS file not found: #{inputs[:tafile]}!"
    exit
  end if inputs[:tafile]

  begin
    cert_file = File.readlines(inputs[:cert]).map { |x| x.chomp }.join('\n')
  rescue Errno::ENOENT
    puts "Cert file not found: #{inputs[:cert]}!"
    exit
  end if inputs[:cert]

  begin
    key_file = File.readlines(inputs[:key]).map { |x| x.chomp }.join('\n')
  rescue Errno::ENOENT
    puts "Key file not found: #{inputs[:key]}!"
    exit
  end if inputs[:key]

  begin
    p12file = Base64.encode64(File.read(inputs[:p12file]))
  rescue Errno::ENOENT
    puts "PKCS#12 file not found: #{inputs[:p12file]}!"
    exit
  end if inputs[:p12file]

  unless inputs[:ovpnconfigfile].nil?
    ovpnconfighash = Ovpnmcgen.getOVPNVendorConfigHash(inputs[:ovpnconfigfile])
  else # Bare minimum configuration
    ovpnconfighash = {
      'client' => 'NOARGS',
      'comp-lzo' => 'NOARGS',
      'dev' => 'tun',
      'remote-cert-tls' => 'server'
    }
  end
  if remotes
    ovpnconfighash['remote.1'] = "#{host} #{port} #{proto}"
    remotes.each_with_index do |r, i|
      ovpnconfighash["remote.#{i+2}"] = r
    end
  else
    ovpnconfighash['remote'] = "#{host} #{port} #{proto}"
  end
  ovpnconfighash['ca'] = ca_cert
  ovpnconfighash['tls-auth'] = tls_auth if inputs[:tafile]
  ovpnconfighash['key-direction'] = '1' if inputs[:tafile]
  ovpnconfighash['cert'] = cert_file if inputs[:cert]
  ovpnconfighash['key'] = key_file if inputs[:key]
  ovpnconfighash['vpn-on-demand'] = '0' unless enableVOD

  vpnOnDemandRules = Array.new
  vodTrusted = { # Trust only Wifi SSID
    'InterfaceTypeMatch' => 'WiFi',
    'SSIDMatch' => trusted_ssids,
    'Action' => 'Disconnect'
  }
  vodUntrusted = { # Untrust Wifi
    'InterfaceTypeMatch' => 'WiFi',
    'SSIDMatch' => untrusted_ssids,
    'Action' => 'Connect'
  }
  vodWifiOnly = { # Untrust all Wifi
    'InterfaceTypeMatch' => 'WiFi',
    'Action' => case inputs[:security_level]
      when 'paranoid', 'high'
        'Connect'
      else # medium
        'Ignore'
      end
  }

  vodDomainOnlyActionParam = {
    'Domains' => vodDomains,
    'DomainAction' => 'ConnectIfNeeded'
  }
  vodDomainOnlyActionParam['RequiredURLStringProbe'] = inputs[:domain_probe_url] if inputs[:domain_probe_url]

  vodDomainOnly = { # When a domain is searched, bring up VPN
    'Action' => 'EvaluateConnection',
    #'DNSDomainMatch' => vodDomains # this key only works for configured DNS domains search list.
    'ActionParameters' => [vodDomainOnlyActionParam]
  }

  vodCellularOnly = { # Trust Cellular
    'InterfaceTypeMatch' => 'Cellular',
    'Action' => case inputs[:security_level]
        when 'paranoid'
          'Connect'
        when 'high'
          'Ignore'
        else # medium
          'Disconnect'
        end
  }
  vodDefault = { # Default catch-all
    'Action' => 'Ignore'
  }

  # Insert URLStringProbe conditions when enabled with --url-probe
  vodTrusted['URLStringProbe'] =
    vodUntrusted['URLStringProbe'] =
    vodWifiOnly['URLStringProbe'] =
    vodDomainOnly['URLStringProbe'] =
    vodCellularOnly['URLStringProbe'] =
    vodDefault['URLStringProbe'] =
    inputs[:url_probe] if inputs[:url_probe]

  vpnOnDemandRules << vodTrusted if trusted_ssids
  vpnOnDemandRules << vodUntrusted if untrusted_ssids
  vpnOnDemandRules << vodWifiOnly
  vpnOnDemandRules << vodDomainOnly if vodDomains
  vpnOnDemandRules << vodCellularOnly << vodDefault
  vpnOnDemandRules << { # Default catch-all when URLStringProbe is enabled and returns false to prevent circular race.
    'Action' => 'Ignore'
    } if inputs[:url_probe]

  cert = {
    'Password' => p12pass,
    'PayloadCertificateFileName' => "#{user}-#{device}.p12",
    'PayloadContent' => StringData.new(p12file),
    'PayloadDescription' => 'Provides device authentication (certificate or identity).',
    'PayloadDisplayName' => "#{user}-#{device}.p12",
    'PayloadIdentifier' => "#{identifier}.#{user}-#{device}.credential",
    'PayloadOrganization' => domain,
    'PayloadType' => 'com.apple.security.pkcs12',
    'PayloadUUID' => certUUID,
    'PayloadVersion' => 1
  } if p12file

  vpn = {
    'PayloadDescription' => "Configures VPN settings, including authentication.",
    'PayloadDisplayName' => "VPN (#{host}/VoD)",
    'PayloadIdentifier' => "#{identifier}.#{user}-#{device}.vpnconfig",
    'PayloadOrganization' => domain,
    'PayloadType' => 'com.apple.vpn.managed',
    'PayloadUUID' => vpnUUID,
    'PayloadVersion' => 1,
    'UserDefinedName' => "#{host}/VoD",
    'VPN' => {
      'AuthenticationMethod' => 'Certificate',
      'OnDemandEnabled' => (enableVOD)? 1 : 0,
      'OnDemandRules' => vpnOnDemandRules,
      'PayloadCertificateUUID' => certUUID,
      'RemoteAddress' => 'DEFAULT'
    },
    'VPNSubType' => (inputs[:v12compat])? 'net.openvpn.connect.app' : 'net.openvpn.OpenVPN-Connect.vpnplugin',
    'VPNType' => 'VPN',
    'VendorConfig' => ovpnconfighash
  }
  unless p12file
    vpn['VPN']['AuthName'] = "#{user}-#{device}"
    vpn['VPN']['AuthenticationMethod'] = 'Password'
    vpn['VPN'].delete('PayloadCertificateUUID')
  end

  plistPayloadContent = [vpn]
  plistPayloadContent << cert if p12file
  #encPlistPayloadContent = cmsEncrypt([vpn, cert].to_plist).der_format

  plist = {
    'PayloadDescription' => "OpenVPN Configuration Payload for #{user}-#{device}@#{host}",
    'PayloadDisplayName' => "#{host} OpenVPN #{user}@#{device}",
    'PayloadIdentifier' => "#{identifier}.#{user}-#{device}",
    'PayloadOrganization' => domain,
    'PayloadRemovalDisallowed' => false,
    'PayloadType' => 'Configuration',
    'PayloadUUID' => plistUUID,
    'PayloadVersion' => 1,
    #'EncryptedPayloadContent' => StringData.new(encPlistPayloadContent)
    'PayloadContent' => plistPayloadContent
  }

  return plist.to_plist
end

.getOVPNVendorConfigHash(ovpnfilepath) ⇒ Object 



3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/ovpnmcgen/ovpnconfig.rb', line 3

def getOVPNVendorConfigHash(ovpnfilepath)
  ovpnfile = ""
  begin
    # get rid of comments in the file.
    ovpnfile = File.readlines(ovpnfilepath).delete_if { |l| ; l.start_with?('#') or l.start_with?(';') or l.chomp.empty? }

    # TODO: [Warning] Get rid of/handle <ca>...</ca>, <cert>...</cert>, <key>...</key>, <tls-auth>...</tls-auth> inline cert/key enclosures.
    # Bail when inline cert/key enclosures are detected.
    ovpnfile.each do |l|
      r = l.chomp.match(/<.*>/)
      raise ArgumentError.new "OpenVPN client config file contains inline data enclosures: #{r.to_a.join(', ')}!\nSuch files are not yet supported. Remove them and try again" unless r.nil?
    end

    # TODO: Handle multiple remote lines.
    # Currently, all remote lines are ignored.

    # map to key => value pairs for plist purposes. Singular verbs will be: 'verb' => 'NOARGS'.
    ovpnhash = Hash[ovpnfile.map do |l|
      a = l.split
      if a.length == 1
        a << "NOARGS"
      elsif a.length > 2
        b = a.take(1)
        c = a.drop(1).join ' '
        a.replace(b << c)
      end
      a
    end]

    # delete obviously unsupported keys.
    ovpnhash.delete_if do |key, value|
      case key
      when 'fragment', 'mssfix', 'secret', 'socks-proxy', 'persist-key', 'persist-tun', 'resolv-retry', 'nobind', 'verb', 'user', 'group', 'pull', 'mute'
        true
      when 'remote', 'ca', 'pkcs12', 'tls-auth', 'cert', 'key', 'proto' # specified with switches.
        true
      else
        false
      end
    end
  rescue Errno::ENOENT
    puts "OpenVPN config file not found: #{ovpnfilepath}!"
    exit
  end
  return ovpnhash
end